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Magnesium has two valence electrons, and oxygen has six valence electrons. What type of bonding is likely to occur between a magnesium atom and an oxygen atom?

Verified Answer :

kiai1014

Magnesium and Oxygen atoms would cause an ionic compound.

Magnesium will give its two valence electrons to oxygen and it will have a charge of 2+(positive). It will also complete its octet, getting balanced. 
Oxygen will take two electrons from magnesium getting a charge of 2-(negative). It will also complete its octet.

When making the formula, the two charges will cancel out each other giving the formula MgO. 

It is an ionic bond.